King Oyster Mushrooms

Ingredients

• 1/2 cup raw almonds

• 1/4 cup extra-virgin olive oil, divided

• 1 garlic clove, coarsely chopped

• 1 teaspoon grated lemon zest plus 1 tablespoon fresh lemon juice, divided, plus more zest for garnish

• 1 3/4 teaspoons kosher salt, divided, plus more to taste

• 10 king oyster mushrooms (about 2 pounds), trimmed and halved lengthwise

• 6 tablespoons olive oil, divided

• 1 teaspoon black pepper, divided

• 1 1/4 cups refrigerated pesto

• Flaky sea salt, to taste